Leading up to the Civil War this shows the economy of ________
What are the northern states?
The proper tool to determine how much matter is in an object.
What is a pan balance.
A brick is an example of what type of material?
What is opaque?
This is an example of
What is refraction?
Point B
What is the trough?
Air heating and moving is an example of this type of energy transformation.
What is radiant energy transformed to wind energy.
The plants growth in centimeters is this.
What is the dependent variable.
From point A to point D
What is the wavelength?
High pitch sounds waves are made from
What are sound waves with high energy and high frequency?
The constant in this experiment. 
What is amount of water.
or
What is the location of the plant.
The order of colors from the shortest wavelength to the longest.
Violet, Blue, Green, Yellow, Orange, Red
The car will stop after a certain amount of time because the force of frictions opposes this type of energy.
What is kinetic energy?
This is an example of ...
What is conservation of mass.
These have the same volume but has ...
What is different mass.
The distance a car travels is an effect of this...

What is mass?